| 摘要 |
<p>A process for rendering nacreous pigments hydrophobic, the pigments being based on mica platelets coated with metal oxides, comprises coating the pigments in aqueous suspension with a chromium (III) or aluminum (III) hydroxide or silicate, and then treating the coated pigments with a solution of a hydrocarbon carboxylic acid having more than four carbon atoms per carboxyl group.</p> |
